JP3678528B2 - Segment assembly equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a segment assembling apparatus for assembling a segment along a tunnel wall.
[0002]
[Prior art]
Conventionally, a tunnel machine such as a shield machine is used for excavating while assembling a plurality of segment pieces divided along the tunnel wall in order to prevent the tunnel wall from falling. ing. This segment piece is usually assembled using a segment assembling apparatus having a rotating body. In this case, the rotating body is configured to rotate around the central axis of the tunnel machine to sequentially assemble the segments.
[0003]
FIG. 3 shows a cross-sectional view of a shield machine equipped with this type of conventional segment assembling apparatus. In the segment assembling apparatus 101 of this conventional shield machine 100, the segment piece 102 is transported to the vicinity of the segment supplying part on the segment supplying apparatus 103 provided on the already assembled segment piece, and then the rotating body. It is gripped by the gripping part attached to 104 and moved in the direction of the tunnel central axis, and rotated around the tunnel central axis to be assembled into the segment supply site.
[0004]
Thus, in the conventional segment assembling apparatus 101, in addition to the space for moving the rotating body and the segment piece in the radial direction of the tunnel diameter at the segment piece supply site, an insertion space for the segment supply apparatus 103 is required. .
[0005]
[Problems to be solved by the invention]
By the way, in the large-diameter tunnel machine, there is a space in the radial direction, so that the insertion space for the segment supply device 103 can be secured. However, in the medium- and small-diameter tunnel machines, the radial space is limited. Therefore, it is difficult to secure an insertion space for the segment supply device 103. For this reason, when the segment supply device cannot be mounted, the segment piece is supplied to the vicinity of the segment supply site by human power, a hoist, a crane or the like.
[0006]
However, as mentioned above, in medium and small-diameter tunnel machines, supplying segment pieces with human power, hoists, cranes, etc. places a heavy burden on the operator and has safety problems. There is a problem that it takes a lot of time.
[0007]
The present invention has been made to solve such problems. In the medium and small diameter tunnel machines, a large space in the radial direction is ensured to improve workability, labor saving, and automation in the segment assembly work. An object of the present invention is to provide a segment assembling apparatus capable of achieving the above.
[0008]
[Means for solving the problems and actions / effects]
In order to achieve the above object, the segment assembling apparatus according to the present invention is a segment assembling apparatus having a rotating body that rotates around an excavation direction axis of a tunnel machine.
The center of rotation of the rotating body is offset from the central axis of the tunnel machine by approximately 180 ° opposite to the segment piece supply site.
[0009]
In the present invention, the segment piece is held by a rotating body that rotates around the tunneling direction axis of the tunnel machine, and the segment piece is assembled along the tunnel well wall. The rotation center of the rotating body is offset approximately 180 ° opposite to the segment supply site in a range that does not interfere with the pit wall or existing segment even if the rotating body rotates while gripping the segment piece. Therefore, a large space in the radial direction in the segment piece supply site can be secured, and the segment supply device can be inserted in the vicinity of the segment supply site even in a tunnel machine having a medium or small diameter. As a result, the burden on the operator in the segment assembling work can be reduced, and workability can be improved, labor saving, and automation can be achieved.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Next, specific embodiments of the segment assembling apparatus according to the present invention will be described with reference to the drawings.
[0011]
FIG. 1 shows a longitudinal sectional view of a shield machine 2 including a segment assembling apparatus 1 according to an embodiment of the present invention. FIG. 2 shows a sectional view of the shield machine 2.
[0012]
The shield machine 2 according to the present embodiment is divided into a front body portion 3 and a rear body portion 4, and the front body portion 3 and the rear body portion 4 are covered with cylindrical skin plates 5a and 5b, respectively. A segment assembling device (segment erector) 1 is installed behind the rear trunk portion 4. The segment assembling apparatus 1 includes a rotating body 7 for assembling the segment piece 6 and a segment supplying apparatus 8 for transporting the segment piece 6 from the rear of the shield machine 2 to a segment supply site (lower part of the rotating body 7). Yes.
[0013]
The rotator 7 can move in the direction of the digging axis and rotate around the digging axis, and the rotation center 9 of the rotator 7 is a range in which the segment piece 6 does not interfere with the well wall or existing segments even if the segment piece 6 is rotated. Thus, it is offset from the central axis of the shield machine 2 approximately 180 ° to the segment supply site. The rotating body 7 includes a gripping claw 7a for gripping the segment piece 6 and an assembly mechanism 7b that grips the end of the segment piece and moves and assembles it to the segment assembly site. The segment supply device 8 is installed on an existing segment piece.
[0014]
In the segment assembly device 1 of the shield machine 2 configured as described above, the segment piece 6 is transported on the segment supply device 8 from the rear of the shield machine 2 to the segment supply site. Next, the segment piece 6 is rotated about the digging direction axis after the center side end surface of the segment piece 6 is gripped by the gripping claws 7a of the rotating body 7 and moved in the digging direction along the digging direction axis. Then, it is assembled to the segment assembly site by the assembly mechanism 7b. When the segment piece 6 is rotated by the rotating body 7 to be assembled into the segment assembly site, the stroke of the rotating body 7 is controlled by an arithmetic device (not shown), and the direction of the segment piece 6 is along the tunnel wall. To be adjusted.
[0015]
In this way, the rotation center 9 of the rotating body 7 is offset approximately 180 ° opposite to the segment supply site so long as the segment piece 6 is not interfered with the well wall or the existing segment even if the segment piece 6 is rotated. A large radial space at the piece supply site can be secured. Therefore, even when the shield machine 2 has a medium or small diameter, the space for inserting the segment supply device 8 can be secured, and labor saving and automation can be achieved in the segment assembling work. Can be improved.
[0016]
In this embodiment, the segment assembling apparatus 1 used for the shield machine 2 has been described. However, the present invention can also be applied to other tunnel machines that perform segment assembling work.
[0017]
In the present embodiment, the sloke of the rotator 7 is controlled by the arithmetic device, but the present invention is not limited to this. For example, the shape of the segment piece and the pit wall may be adjusted while sensing.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a shield machine according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the shield machine according to the present embodiment.
FIG. 3 is a cross-sectional view of a conventional shield machine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Segment assembly apparatus 2 Shield machine 6 Segment piece 7 Rotating body 8 Segment supply apparatus 9 Center of rotation

Claims (1)

In a segment assembling apparatus having a rotating body that rotates around an excavation direction axis of a tunnel machine,
A segment assembling apparatus characterized in that the center of rotation of the rotating body is offset from the central axis of the tunnel machine by approximately 180 ° opposite to the segment piece supply site.

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